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| Experimental on CH4 Reforming Behavior of Coke Oven Gas in Gas-Based Shaft Furnace |
| WU Kai-ji，CHEN Ling，ZHANG Tao，GUO Min，LU Cun-fang |
| （Iron-Making Research Department of CISDI R and D Co．， Ltd．， Chongqing 401122， China） |
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Abstract Gas-based shaft furnace direct reduction process using coke oven gas，which can produce the high-quality sponge iron，is a good method to extend the industrial chain of the coking industry．On the other hand，it can also promote the development of the EAF process steelmaking with the scrap and sponge iron，which has a great significance to the change of the energy and product structure adjustment in Chinese steel industry．Effects of the operating conditions on CH4 reforming behavior of coke oven gas in gas-based shaft furnace，which include the temperature，H2O and CO2 ratio，and high temperature sponge iron，had been researched by basic experimental study．The results show that increasing temperature is beneficial to CH4 reforming behavior of coke oven gas，the content of effective reducing gas comes up to its highest value (about 80%) at 1000℃．Hot sponge iron greatly catalyze and promote CH4 reforming of coke oven gas，which can improve the ratio of CO2 in reaction to 84.9% and the ratio of H2O in reaction to 100%；the appropriate addition of CO2 should be set 2%-6%, the addition of H2O 4%-10%．
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Received: 02 July 2013
Published: 28 March 2014
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2014, Vol. 49 
